Bar for reinforcing concrete.



JACOB KINSEL, OF PHILADELPHIA, PENNSYLVANIA.

ICE-GREEPER.

Specification of Letters Patent.

Patented April 13, 1909.

Application filed June 12, 1908. Serial No. 438,161.

To all whom it may concern:

Be it known that I, JACOB KiNsEL, citizen of the United States, resicing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Ice-Creepers, of which the following is a specification.

The object of the present invention is the provision of an improved ice creeper which is designed to be applied to the heel of a shoe or article of foot wear and which embodies a novel construction whereby it can be easily and quickly moved either into an operative or an inoperative position.

The invention further contemplates an ice creeper which is simple and durable in its construction and can be readily applied to the heel by an ordinary shoe maker.

For a full understanding of the invention and the merits thereof and also to acquire a knowledge of the details of construction and the means for effecting the result, reference is to be had to the following description and accompanying drawings, in which:

Figure 1 is a perspective view showing the bottom of a heel having the ice creeper applied thereto. Fig. 2 is a longitudinal sectional view showing the teeth as moved into an operative osition. Fig. 3 is a similar view on an en arged scale showing the teeth as moved into an inoperative position. Fig. 4 is a transverse sectional view on the line 4-4 of Fig. 2.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

For the purpose of illustration the inven tion is shown as applied to the heel of a shoe 1 which may be of any approved construc tion. A casing is embedded in the forward portion of the heel and journaled within this casing so as to revolve about a horizontal axis is a cylinder 2. Projecting from the periphery of this cylinder are the teeth 3 which by revolving the cylinder may be turned into an operative position so as to project below the heel or into an inoperative po sition so as to project forwardly under the instep of the shoe. In the present instance these teeth 3 are detachably applied to the cylinder and are provided with shanks which are threaded within sockets therein. Such a construction has the advantage of enabling the teeth to be made of a hard metal while the cylinder itself may be formed of a softer metal such as brass.

Specifically describing the casing it will be observed that the same comprises a block 4 which is interposed between side plates 5 which are of a substantially rectangular shape, the lower edges of the plates being flush with the bottom of the heel and the forward edges flush with the front of the heel when the casing is in position. The block 4 is recessed to receive the cylinder 2 and fits accurately around the top and rear of the same so as to prevent dirt or foreign matter from accumulating within the interior of the casing and interfering with the action of thecylinder. As shown on the drawing the ends of the cylinder are provided with pivot studs 2 which are journaled within corresponding openings in the side plates 5, the side plates being applied to the block after the cylinder been placed in position within the recess therein. The lower and forward corner of the casing is open for approximately onefourth of the circumference of the cylinder and this opening provides a clearance space for the teeth 3 to admit of the same being moved either into an inoperative or an opera tive position.

For the purpose of locking the cylinder against movement a spring catch 6 is utilized, t 1e said spring catch being pivotally mounted within. a recess formed in one side of the cylinder and the swinging end of the catch being normally caused to project outwardly beyond the cylinder by means of a coil spring 7. When the cylinder has been revolved to turn the teeth 3 downwardly into an operative position so that they project below the bottom of the heel the sprin catch is forced outwardly by the spring and engages the upper end of the opening in the casing to prevent any backward movement of the cylinder, forward movement of the cylinder being prevented by the teeth which engage the opp0- site end of the opening. Attention may here be directed to the fact that the swinging end of the catch is formed with a lip 8 which engages the interior of the casing to limit the outward movement of the catch and prevent the same from being swung forwardly an excessive amount and entirely out of engagement with the shoulder at the upper end of the opening in the casing. When the cylinder has been revolved to move the teeth upwardly under the instep of the shoe the A. E. LINDAU.

BAR FOR REINPORCING CONCRETE.

APPLICATION FILED APR.11,1908.

917,? Patented Apr. 13, 1909.

638" lmvem 0;:

W 441 ifi d UNITED STATES PATENT oi ir ALFRED E. LINDAU, OF ST. LOUIS, MISSOURI, riSSlGNOR TO CORRUGATED BAR QOLNTP" OF ST. LOUIS, MISSOURI, A ()Ol tPORA'lION OF MISSOLRL,

BAR FOR REINFORCING CONCRETE.

Specification of Letters Patent.

To all whom it may concern:

Be it known that I, ALFRED E. LINDAU, a. citizen of the United States, and a resident of the city of St. Louis and State of Missouri,

have invented a new and useful Improvement in Bars for Reinforcing Concrete, of which the following is a specification.

My invention relates to bars for reinforcing concrete, and has for its principal objects to so distribute the metal of the core that its whole tensile or bending strength will be fully developed throughout the entire cross section of the core, to maintain the cross section of the bar of uniform shape and size throughout the length of the bar; to provide the core with a mechanical bond Without affecting the tensile or bending strength of the core andwithout materially increasing the weight of the bar; to provide for the meohanicnl bonding of the bar with the concrete without danger of forming air or water pockets in the concrete; to devise a contour that is well adapted for manufacture in a rolling mill; to so arrange the bonding n1eni- 2- hers that. the process of manufacturing the bar will not materially affect the homogeneity of the metal; and to secure other advantages hereinaftermore fully eppeering.

My invention consists principally in a bar whose cross sect-ion comprises an oblong rniddle portion and convex side portions, the convex portions terminating short of the ends of the middle portion.

It also consists in the construction and arrangements of parts hereinafter described and claimed.

In the accompanying drawing which forms part of this specification, and wherein like symbols refer to like parts wherever they occur, Figure 1 a cross section of a bar enibodying my invention on the line 11 of Fig. 2; Fig. 2 a side View of such bar; Fig. 3 is a cross section of said her turned ninety degrees from its position in Fig. 1; Fig. 4 is a View at right angles to that of Fig. 2; Fig.

5 is a diagrammatic view illustrating the different areas into which the cross section of the bar is divisible. Fig. 6 is a Cross section of a bar of elliptical form.

In smooth or plain hers, the metal throughout the cross section continues full length of the bar in unbroken pit. lines, and consequently such plain bar develop the full tensile strength of the the cross sectional areas. As such he no thin projecting portions that are buckle, such plain bars develop the i bending capacity of their section. count of the metal of a flat her being ci its neutral axis, such fiat bars are larly adapted for bending. The disc. (age of plain hers is that they hare chanica-l bond with the concrete but de; entirely upon skin friction.

The purpose of the present invention to secure the advantages of plain hers to a bar having amechanical bond, ans. ticularly to secure a bar which wi easily and will develop its full tens bending strengtl1.

As illustrated in Fig. 5, the core of n v comprises a middle portion 1 oblong shape and two side portioi a mental shape, the side portions fir'lfllllt short of the ends of the middle This oblong or middle portion comprises nearly one half of the of the cross section and bv reason of its tion. relative to the neutral axis tends ti) 3 crease the facility with which the nor may bent. Preferably, the. ends of the ohlor portion are circular arcs concentric n L1 of greater radius than, the arcs of the s mental portions. In such cssc, the cor the body may be considered as of round or f circular section with wide enlargements 1 i diametrically opposite sides thcrot. viously, howcy'er, the several arcs need not be circular. In fact. the segments in: formed with elliptical arcs or circu n of large radius, whenever it is desirable secure a greater concentration of the 7 adjacent to the neutral axis, 1 'l. the area and shape of the cross section t r core are uniform throughout the l! i the bar, although, as hereinafter stated, mechanical bonding members are formed l the surface of the segmcntin portions.

this arrangement, the lonritudinid it-inc;

K t 1 l of the sumace of the core'ere per e1. w; 

